G01 Invoice Identification
To transmit identifying dates and numbers for this transaction set
G0101 is the invoice issue date.
Identifying number assigned by issuer
G0103 is the date assigned by the purchaser to the purchase order.
Identifying number for Purchase Order assigned by the orderer/purchaser
Number assigned by a vendor referencing a particular customer purchase order
Reference number assigned by the sender to relate a transaction set to a master transaction (When associating a group of purchase orders, invoices or other transaction sets, use the master reference (link) number to identify the group and the link sequence number to identify individual transaction sets within the group)
P0607: If either G01-06 or G01-07 is present, then the other is required
A two-part number in the form "SSSTTT" where "SSS" is a sequentially assigned number and "TTT" equals the highest sequential number being used within the associated (linked) group (Leading zeros are required for both "SSS" and "TTT")
Code specifying the type of transaction